/** Copyright (c) 2007-2008, Markos Evlogimenos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * The name of Markos Evlogimenos may be used to endorse or
 *		 promote products derived from this software without specific
 *		 prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

package org.kamimark.properties.sorters;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Map;
import java.util.Properties;

/**
 * This is used to store the properties with an Insertion Time sorting
 * 
 * @author Markos Evlogimenos
 */
public class InsertionSortedProperties extends Properties
{

	private static final long serialVersionUID = 1L;
	private final ArrayList<Object> sorting = new ArrayList<Object>();

	@Override
	public synchronized Enumeration<Object> keys() {
		return new Enumeration<Object>()
		{

			int i = 0;

			public boolean hasMoreElements() {
				return i < sorting.size();
			}

			public Object nextElement() {
				return sorting.get(i++);
			}
		};
	}

	@Override
	public synchronized Object put(final Object key, final Object value) {
		sorting.add(key);
		return super.put(key, value);
	}

	@Override
	public synchronized void putAll(final Map<? extends Object, ? extends Object> t) {
		sorting.addAll(t.keySet());
		super.putAll(t);
	}
}
